phaser war

[Gilmore Creek Geophysical Observatory]

For the few interested I sent Tom the following:
After his response we will take this off the net. Thanks.
Yo Tom
Thanks for the note. Sorry for the delay. I took a long weekend to
clear some trees around my home. Enjoyed your dB war. I was posting
them around our network for the humor. My boss Tom Clark W3IWI past
Amsat president references everything in dBs. Like "our budget just
took a 3 dB hit. Half you guys half to go."

The circuit will shift phase. I know "phew", but it will. The caps
cause a phase shift as the amplitude drops when the wiper moves
past the center of the "coil". After the amp drops to zero it comes
back 180 degrees out and you can shift it again. If you remove the
caps the circuit acts as you suggest. 

I sent the circuit to the design team that built the phase shifting
networks in the base band converters we use for radio astronomy.
Brian Corey MIT Haystack did the solution, and will send it along
if we need it.

I cheated and built one. Using a HP 8508a vector voltmeter and duel
trace scope I measured a phase shift of -6.6 to +69.7 degrees
before the amplitude drops to zero. Sig source was a 8660 on 14Mhz.
Using the "balance" control to move the zero amplitude around I was
able to catch most of the full shift. Kind of ugly, but it works.
I think in the real world you would be tweaking all day.

73 Rich KL7RA

   

>From silver at ax.apc.org (Carlos Augusto Silveira Pereira)  Thu Jun 13 00:26:05 1996
From: silver at ax.apc.org (Carlos Augusto Silveira Pereira) (Carlos Augusto Silveira Pereira)
Date: Wed, 12 Jun 1996 20:26:05 -0300
Subject: ALL ASIAN COUNTRIES CONTEST
Message-ID: <199606122326.UAA27098 at ax.ibase.br>

Dear friends,

I need in a hurry the rules for the All Asian Countries CW contest. If you have it please send it to me.

Thank you in advance,

Carlos - PY1CAS
E-mail: silver at ax.apc.org


>From steven at zianet.com (Steven Nace KN5H)  Thu Jun 13 00:43:14 1996
From: steven at zianet.com (Steven Nace KN5H) (Steven Nace KN5H)
Date: Wed, 12 Jun 1996 17:43:14 -0600
Subject: Contesters & FD
Message-ID: <23431489009343 at zianet.com>

At 08:20 AM 6/10/96 -0400, Denny wrote:
>
>Field Day is the golden opportunity to DEMONSTRATE and to HELP newer hams to
>sit down and contest on HF, 

Denny is correct. HELP is what these guys need.

>these technicians, both code and no code, are the future
>of ham radio... the ARRL membership is now 52% technician class... (our local
>club is more like 60%)... 

It is about the same here but with one difference, none of the general+
hams even get on HF!! Last Fall I went to the local meeting and 'begged'
them to work me in the 10 mtr contest. Guess how many I worked?!? Oh yeah,
you dont have to be a General to work 10 phone. Well, still no Q's.

>for those of us who contest on HF, and especially
>for those who prefer cw, that could seem depressing... it shouldn't be... at
>the SVARA club meeting last night the question was asked of the technicians,
>"How many of you are planning on upgrading?"... all but one person held up
their hand

Guess you wont ask that question again.

>this is good news, folks!!!!  there are contesters, and dxers,
>and brass pounders in that crowd...  they just don't know it yet... it is OUR
>job to expose them to the world beyond their handheld...
>I WILL be contesting at field day...  although you WILL beat me in the score,
> I challenge you to beat me where it counts...  making new contesters...
>
>Cheers   ...   Denny

OK, call me a whimp. I aint going out for FD. Too hot; 100+ deg F. No trees.
No shade. No rain. No generators. All camping locations closed down due to
drought.

HOWEVER, I shall be contesting TOO.

I shall get on and work as many as I can from the comfort of the shack. Yes,
4 elements on 40 shall perform and I shall not be in the true spirit of FD
by hogging a spot on the band but, I WILL be contesting at FD too. 

If you are like me and cannot go out with the gang, GET ON AND CONTEST.
Maybe someone out there shall be inspired and go home, hook up his keyer and
work YOU in the IARU/WRTC! Think about it, work the masses.

de Hose  KN5H
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Steven Nace	KN5H
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(505) 525-6205 (wk)
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snace at tdrss.wsc.nasa.gov

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